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John Deere Tractors Discussion Forum
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Re: 1969 820 - Roosa Master Injection Pump

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jdemaris

04-23-2007 19:19:53




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You know - I think I've worked on a couple of 820s and 1020s that had CDC pumps on them - but according to Deere Co. they weren't used on those green machines. The yellow version - the JD300 - which has the same 152 c.i. engine as yours - DID use the CDC331-8DG. That's probably the pump you have. The reason Deere Co. was selling changeover kits for new D-series pumps in the early 80s was because Stanadyne was dropping parts-support for all the C pumps. At that time, I knew a number of pump shops that were stock-piling repair parts. But . . . that was over 20 years ago. I don't know if you can find them somewhere or not. You might try first with Deere. Deere Co. used to sell those parts under a Deere part # (I can look it up for you if needed). Deere might have a dealer who has it in old-stock. I just got a hydraulic pump repair kit for my 1960 Deere that was obsolete in 1963 - but Deere checked their computer "obsolete parts database" and found one in a dealer's stock. (Webster Electric pump for a 1010). I haven't worked in an injection pump shop since 1991 - so I'm not up to date on what is availble with all stuff. I do more truck pumps now than tractor. A guy I know that has his own pump shop is one of those guys that was buying up obsolte Roosamaster parts year's ago. His sons now run his business and they do the auto-truck pumps - but old Ralph still comes in and does the older farm injection pumps. Call him and ask. He is Ralph Senior - at Ralph's Diesel - 315-655-3702 - Cazenovia, NY. I haven't called him in a year, hopefully he hasn't "kicked the bucket" yet. In regard to removing the entire metering-valve tube - it can be removed - it's held in by one lock-bolt. But - I advise you not too. Once you go that far, you can really get into a mess. I'd get that rack and pinion out, clean the crud and rust out of it, and see if you have any teeth left. If you need the old Deere part #, or more info, let me know.

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